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std::operator<<(std::error_code)

STd：：操作符<%28std：：Error[医]代码%29

Defined in header ​​
template< class CharT, class Traits > std::basic_ostream<CharT,Traits>& operator<<( basic_ostream<CharT,Traits>& os, const error_code& ec ​(since C++11)

对错误代码执行流输出操作。ec...

相当于os << ec.category().name() << ':' << ec.value...

参数

os-output stream to insert data to
ec-error code

返回值

os...

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